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Finding the Fourth Proportional to 86,108.70, 129,181.80 and 36,160.32

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Solution

The fourth proportional to 86,108.70, 129,181.80 and 36,160.32 is: 54,248.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,108.70 : 129,181.80 = 36,160.32 : x
  2. Step 2: Convert to fraction form
    86,108.70/129,181.80 = 36,160.32/x
  3. Step 3: Cross multiply
    86,108.70x = 129,181.80 × 36,160.32
  4. Step 4: Simplify right side
    86,108.70x = 4,671,255,226.18
  5. Step 5: Solve for x
    x = 4,671,255,226.18/86,108.70
  6. Step 6: Final answer
    x = 54,248.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.